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Cooling System

The cooling system installed on the MSI NX8800GTS as well as on a majority of GeForce 8800 GTS from other graphics card suppliers is a shortened version of the GeForce 8800 GTX cooler we described in our earlier article called Directly Unified: Nvidia GeForce 8800 Architecture Review.

The heatsink and the heat pipe that goes out of the copper sole are both shortened. The flat U-shaped heat pipe pressed into the base for uniform distribution of heat is positioned in a different way, too. The aluminum frame that holds all of the cooler details has numerous projections where it contacts the memory chips, the voltage regulator’s power transistors, and the NVIO chip. Traditional pads made out of non-organic fiber and soaked in white thermal grease provide the necessary thermal contact. Dark gray thermal grease is used as a thermal interface for the GPU.

There are rather few copper elements in the cooler, making it light and not requiring a back-plate. The eight spring-loaded screws that fasten the cooler right to the PCB are quite enough. The GPU die is protected with a heat-spreading cap and is surrounded with a wide metallic frame that helps avoid misaligning the cooler.

The heatsink is cooled by a 75mm blower that has the same electrical parameters as the fan in the GeForce 8800 GTX cooler (0.48A/12V). It uses a 4-pin connection to the PCB. The cooler is covered with a translucent plastic casing in such a way that the hot air is exhausted outside through the slits in the card’s mounting bracket.

This cooler design is reliable and time-tested, almost silent at work, and highly efficient. There’s no sense in replacing it with anything else. MSI only replaced Nvidia’s sticker on the cooler’s casing with its own one that copies the picture on the box and also put another sticker, with its own logo, on the fan.

 
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